For a home to be perfectly comfortable as far as the air conditions are concerned, there has to be proper insulation in the areas most prone to leaks. Crawl spaces have for the longest time been subject to batt and fiberglass insulation but modern research has brought to light some of the shortcomings of this insulation method. These crawlspaces are typically designed as some mini-basements. Ideal ones should be able to curb air infiltration in the home, so as to ultimately prevent the presence of allergens.
Traditional crawlspaces are typically damp, and the presence of pests is very likely. They are also prone to unintentional air leaks that render the entire area moist. The durability and air quality of the house can be improved by maintaining the dry nature of the crawl space.
When your crawl space is frequently subject to round vents penetrating into the house, you need to take action immediately. While fiberglass provide some form of insulation, they cannot prevent the entry of moisture and water vapor. Once applied, the liquid expands and forms bubbles that dry up, filling up space. Because gases are naturally poor conductors of heat, and because the foam is made up of materials that have high resistance to heat transfer, heat exchange through it is significantly reduced.